Description
That sweet but powerful voice
Professional audio architecture, 340mW high driving power, 3.5mm SE and 4.4mm balanced output ports, dual DAC, MQA 8X, PCM768/DSD256 native decoding

Portable USB DAC/headphone amp
Computer sound card, HiRes certified, low power consumption, all-metal body, Bauhaus design, hardware volume control, RGB indicator light
Why use a USB dongle?
Recover a headphone port for your modern smartphone, giving voice to the large online library of lossless music available; higher detail compared to Bluetooth audio, hearing more musical details, bringing you back closer to the original music venue in experience.

Professional audio architecture
Containing circuitry on a level with professional full-scale HiBy Digital Audio Players, which is designed solely for high-res lossless music, replaying the original music in every detail, including all its energy and presence.

Independent FPGA-based dual independent crystal oscillator reclocking
Equipped with 45.158MHz and 49.152MHz dual dedicated audio crystal oscillators for effectively lower jitter, providing the whole audio system with a high precision, low jitter clock source.

Efficient USB receiver
Driven by a highly integrated 28nm USB receiver chip of high efficiency, with the 416M dedicated audio DSP onboard to realize the best balance between high performance and long runtime, effectively lowering the consumption of the smartphone's battery.

My dongle is more powerful than yours
340mW+340mW @32Ω is nearly unheard of for a USB dongle but here it is! Easily drive all your HiFi earphones and even some full-size headphones! High driving power is the stuff of miracles! It will let your earphones handle all music styles with more aplomb than ever, a higher sense of energy without sacrificing any fine control or detail!

High performance by the numbers
High SNR, low absolute noise level and low THD all at the forefront of products of this class, making for a faithful rendition of the great music at your fingertips on a black canvas.

MQA 8X unfolding
The HiBy FC4 includes MQA technology*, which enables you to play back MQA audio files and streams by a factor of 8x, delivering the sound of the original master recording.
*The FC4 features an MQA renderer now, and it is going to include MQA full decoding technology in the next few months.
The smartphone must be using apps supporting bit-perfect and MQA (e.g. HiByMusic, TIDAL), in order for MQA unfolding to occur with the HiBy FC4 connected via USB.

Dual ES9218PC DACs
Equipped with 2 of ESS technologies’ renowned ES9218PC DAC chips, set to output to each channel independently, their strong decoding power not letting go of a single musical detail.

Hi-res support
Supporting up to PCM768kHz/32bit, DSD256 (native) decoding, edging on professional HiFi in decoding specifications, this will have no problems decoding all your usual lossless streaming formats.

3.5mm SE and 4.4mm balanced brought together
Includes 3.5mm SE and 4.4mm balanced ports--balanced in position too! The attention to detail inspires confidence.

Software Integration
Seamlessly integrating with the HiByMusic app’s USB exclusive mode, be confident of your smartphone’s bit-perfect audio output to the FC4, fully unleashing the FC4’s hardware decoding/amplification power.
The HiByMusic App is a professional app for Hi-Res audio playback on Android and iOS, with over 3 million users worldwide, and its USB-exclusive mode coupled with external USB DAC/headphone amps garners widespread praise from HiFi aficionados all around.

All-platform support
Supports use on Android / iOS / Mac / Windows as USB dongle / computer external soundcard. No charging required, driver-free plug-and-play.
Driver-free plug-and-play on Android / iOS / Mac / Windows 10

Hi-Res certified for hi-quality sound
Hi-Res certification is your guaranteed ticket to good sound!

All-metal body
All-metal body in Bauhaus design language, black with luxurious gold trim.

Hardware volume buttons/hardware volume
30-step physical hardware volume button controlling hardware volume controller for best adaptability and lossless volume control.

RGB indicator light
Displaying different colours depending on what is being played:
Green: MQA
Blue: MQA Studio
Magenta: MQA Rendering
Yellow: ≤48k
Aqua: 64k-192k
Orange: 352.8k or above
White: DSD Red: Paused

What's in the box
①USB Type A to Type C interconnect ②FC4 DAC/headphone amp product proper ③Type-C to Type-C interconnect ④Product packaging ⑤User manual/warranty

What's in the box
①USB Type A to Type C interconnect ②FC4 DAC/headphone amp product proper ③Type-C to Type-C interconnect ④Product packaging ⑤User manual/warranty
Audio specifications
3.5mm PO | 4.4mm BAL | |
---|---|---|
Output Level | 1.9Vrms (32Ω) | 3.3Vrms (32Ω) |
Output Power | 110mW (32Ω) | 340mW (32Ω) |
THD+N | 0.0008% (32Ω) | 0.0006% (32Ω) |
Noise | 1.7μVrms (32Ω) | 2.2μVrms (32Ω) |
SNR | 120dB (32Ω) | 123 dB (32Ω) |
Dynamic Range | 120dB (32Ω) | 123 dB (32Ω) |
Crosstalk Rejection | 72dB (32Ω) | 98 dB (32Ω) |
Frequency response (-3dB) | 20-90Khz (32Ω) | 20-90Khz (32Ω) |
Model: HiBy FC4
Dimensions: 65.3*22.1*11.9 mm
Weight: 21.7 g
Chipset: ES9218 * 2
Buttons: Volume up / down
Supported formats PCM up to 768kHz/32bit, up to DSD256 native
RGB indicator light Status indicator
USB port: Type-C
Headphone out: 3.5mm TRS and CTIA-spec TRRS headsets
Balanced headphone out: 4.4mm balanced
Warranty Period: 1 Year from the date of Invoice
Covered: Manufacturing Defects Only
Warranty Form: https://www.theaudiostore.in/pages/warranty-claim-form
HiBy Music, founded in 2011, is a leading company that specializes in developing and selling high-quality portable audio products. With a focus on digital audio players (DAP) and portable DAC & amplifiers, HiBy Music is dedicated to providing its customers with exceptional audio experiences. Whether you're an audiophile or a music enthusiast, HiBy Music has a range of products that cater to your specific needs. So why settle for anything less when you can enjoy music in its purest form with HiBy Music?
**Design and Build Quality**
The HiBy FC4 boasts a sleek and compact design, making it a great companion for those on the move. The construction feels durable, suggesting it will withstand the rigors of daily use, but my included USB C-to-C cable died yestarday after 3 months
**Sound Quality**
This DAC dongle truly shines in its audio delivery. With Hi-Res and MQA certification, one can expect a noticeably improved listening experience over most built-in phone or laptop DACs. The soundstage is expansive, with clear distinction between instruments. The highs, mids, and lows are balanced, providing a harmonious blend that is pleasing to the ears.
**Compatibility and Usability**
One of the great features of the HiBy FC4 is its broad compatibility with various devices. Whether you're connecting it to a smartphone, laptop, or tablet, the setup is straightforward. The plug-and-play functionality is a boon for non-tech-savvy users, ensuring that high-quality audio is just a connection away.
**Value for Money**
Considering the sound improvement and the premium build quality, the HiBy FC4 offers good value for its price. For audiophiles looking for portable solutions to elevate their listening experience, this dongle is a worthy investment.
**Conclusion**
The HiBy FC4 Portable Hi-Res & MQA Certified DAC Dongle stands out as a solid contender in the realm of portable audio enhancements. Whether you're an audiophile or just someone looking to improve your device's audio output, this product is sure to impress.
Thank you for taking the time to write a review for the HiBy FC4 Portable DAC.
Was also considering iBasso dc06 but decided to go with the FC4. iBasso was a little expensive and lacking any physical keys to control the volume, though iBasso has an app which allows to control the volume but you need to access the phone all the time to control it. FC4 on the other hand has physical volume buttons which gives you additional control on volume. I was able to drive the Sundara at around 80% of volume and pairing it with the Timeless was superb. Overall a great buy and speedy delivery as well.

Description
That sweet but powerful voice
Professional audio architecture, 340mW high driving power, 3.5mm SE and 4.4mm balanced output ports, dual DAC, MQA 8X, PCM768/DSD256 native decoding

Portable USB DAC/headphone amp
Computer sound card, HiRes certified, low power consumption, all-metal body, Bauhaus design, hardware volume control, RGB indicator light
Why use a USB dongle?
Recover a headphone port for your modern smartphone, giving voice to the large online library of lossless music available; higher detail compared to Bluetooth audio, hearing more musical details, bringing you back closer to the original music venue in experience.

Professional audio architecture
Containing circuitry on a level with professional full-scale HiBy Digital Audio Players, which is designed solely for high-res lossless music, replaying the original music in every detail, including all its energy and presence.

Independent FPGA-based dual independent crystal oscillator reclocking
Equipped with 45.158MHz and 49.152MHz dual dedicated audio crystal oscillators for effectively lower jitter, providing the whole audio system with a high precision, low jitter clock source.

Efficient USB receiver
Driven by a highly integrated 28nm USB receiver chip of high efficiency, with the 416M dedicated audio DSP onboard to realize the best balance between high performance and long runtime, effectively lowering the consumption of the smartphone's battery.

My dongle is more powerful than yours
340mW+340mW @32Ω is nearly unheard of for a USB dongle but here it is! Easily drive all your HiFi earphones and even some full-size headphones! High driving power is the stuff of miracles! It will let your earphones handle all music styles with more aplomb than ever, a higher sense of energy without sacrificing any fine control or detail!

High performance by the numbers
High SNR, low absolute noise level and low THD all at the forefront of products of this class, making for a faithful rendition of the great music at your fingertips on a black canvas.

MQA 8X unfolding
The HiBy FC4 includes MQA technology*, which enables you to play back MQA audio files and streams by a factor of 8x, delivering the sound of the original master recording.
*The FC4 features an MQA renderer now, and it is going to include MQA full decoding technology in the next few months.
The smartphone must be using apps supporting bit-perfect and MQA (e.g. HiByMusic, TIDAL), in order for MQA unfolding to occur with the HiBy FC4 connected via USB.

Dual ES9218PC DACs
Equipped with 2 of ESS technologies’ renowned ES9218PC DAC chips, set to output to each channel independently, their strong decoding power not letting go of a single musical detail.

Hi-res support
Supporting up to PCM768kHz/32bit, DSD256 (native) decoding, edging on professional HiFi in decoding specifications, this will have no problems decoding all your usual lossless streaming formats.

3.5mm SE and 4.4mm balanced brought together
Includes 3.5mm SE and 4.4mm balanced ports--balanced in position too! The attention to detail inspires confidence.

Software Integration
Seamlessly integrating with the HiByMusic app’s USB exclusive mode, be confident of your smartphone’s bit-perfect audio output to the FC4, fully unleashing the FC4’s hardware decoding/amplification power.
The HiByMusic App is a professional app for Hi-Res audio playback on Android and iOS, with over 3 million users worldwide, and its USB-exclusive mode coupled with external USB DAC/headphone amps garners widespread praise from HiFi aficionados all around.

All-platform support
Supports use on Android / iOS / Mac / Windows as USB dongle / computer external soundcard. No charging required, driver-free plug-and-play.
Driver-free plug-and-play on Android / iOS / Mac / Windows 10

Hi-Res certified for hi-quality sound
Hi-Res certification is your guaranteed ticket to good sound!

All-metal body
All-metal body in Bauhaus design language, black with luxurious gold trim.

Hardware volume buttons/hardware volume
30-step physical hardware volume button controlling hardware volume controller for best adaptability and lossless volume control.

RGB indicator light
Displaying different colours depending on what is being played:
Green: MQA
Blue: MQA Studio
Magenta: MQA Rendering
Yellow: ≤48k
Aqua: 64k-192k
Orange: 352.8k or above
White: DSD Red: Paused

What's in the box
①USB Type A to Type C interconnect ②FC4 DAC/headphone amp product proper ③Type-C to Type-C interconnect ④Product packaging ⑤User manual/warranty

What's in the box
①USB Type A to Type C interconnect ②FC4 DAC/headphone amp product proper ③Type-C to Type-C interconnect ④Product packaging ⑤User manual/warranty
Audio specifications
3.5mm PO | 4.4mm BAL | |
---|---|---|
Output Level | 1.9Vrms (32Ω) | 3.3Vrms (32Ω) |
Output Power | 110mW (32Ω) | 340mW (32Ω) |
THD+N | 0.0008% (32Ω) | 0.0006% (32Ω) |
Noise | 1.7μVrms (32Ω) | 2.2μVrms (32Ω) |
SNR | 120dB (32Ω) | 123 dB (32Ω) |
Dynamic Range | 120dB (32Ω) | 123 dB (32Ω) |
Crosstalk Rejection | 72dB (32Ω) | 98 dB (32Ω) |
Frequency response (-3dB) | 20-90Khz (32Ω) | 20-90Khz (32Ω) |
Model: HiBy FC4
Dimensions: 65.3*22.1*11.9 mm
Weight: 21.7 g
Chipset: ES9218 * 2
Buttons: Volume up / down
Supported formats PCM up to 768kHz/32bit, up to DSD256 native
RGB indicator light Status indicator
USB port: Type-C
Headphone out: 3.5mm TRS and CTIA-spec TRRS headsets
Balanced headphone out: 4.4mm balanced
Warranty Period: 1 Year from the date of Invoice
Covered: Manufacturing Defects Only
Warranty Form: https://www.theaudiostore.in/pages/warranty-claim-form
HiBy Music, founded in 2011, is a leading company that specializes in developing and selling high-quality portable audio products. With a focus on digital audio players (DAP) and portable DAC & amplifiers, HiBy Music is dedicated to providing its customers with exceptional audio experiences. Whether you're an audiophile or a music enthusiast, HiBy Music has a range of products that cater to your specific needs. So why settle for anything less when you can enjoy music in its purest form with HiBy Music?
**Design and Build Quality**
The HiBy FC4 boasts a sleek and compact design, making it a great companion for those on the move. The construction feels durable, suggesting it will withstand the rigors of daily use, but my included USB C-to-C cable died yestarday after 3 months
**Sound Quality**
This DAC dongle truly shines in its audio delivery. With Hi-Res and MQA certification, one can expect a noticeably improved listening experience over most built-in phone or laptop DACs. The soundstage is expansive, with clear distinction between instruments. The highs, mids, and lows are balanced, providing a harmonious blend that is pleasing to the ears.
**Compatibility and Usability**
One of the great features of the HiBy FC4 is its broad compatibility with various devices. Whether you're connecting it to a smartphone, laptop, or tablet, the setup is straightforward. The plug-and-play functionality is a boon for non-tech-savvy users, ensuring that high-quality audio is just a connection away.
**Value for Money**
Considering the sound improvement and the premium build quality, the HiBy FC4 offers good value for its price. For audiophiles looking for portable solutions to elevate their listening experience, this dongle is a worthy investment.
**Conclusion**
The HiBy FC4 Portable Hi-Res & MQA Certified DAC Dongle stands out as a solid contender in the realm of portable audio enhancements. Whether you're an audiophile or just someone looking to improve your device's audio output, this product is sure to impress.
Thank you for taking the time to write a review for the HiBy FC4 Portable DAC.
Was also considering iBasso dc06 but decided to go with the FC4. iBasso was a little expensive and lacking any physical keys to control the volume, though iBasso has an app which allows to control the volume but you need to access the phone all the time to control it. FC4 on the other hand has physical volume buttons which gives you additional control on volume. I was able to drive the Sundara at around 80% of volume and pairing it with the Timeless was superb. Overall a great buy and speedy delivery as well.
You may also like
OUR HONEST REVIEWS FROM THE CO-FOUNDERS & AUDIOPHILES
View allTRUSTED BY OVER 35K+ MUSIC ENTHUSIAST
Let customers speak for us
from 4777 reviews
Twilight from Soft Ears seems to me like a benchmark for single DD IEMs. The solid metal craftsmanship is commendable and when it comes to the sound, tonality, song signature and quality is presently benchmark for Single DD IEMs, may be rivalled by the Elder turii ti, which cost 3x of this.

I would really recommend these. I previously used KZ Castor, but these IEMs are a major upgrade. The sound division is really good. The only issues are low bass and high treble. If you want a more balanced or v shape, it is better to use an equaliser. I am using these with Fiio K1 and Audiocular X Tiandirenhe CS-PRO DACs. Both give a nice output.
I don't know if this is specific to Apple Music or IE 200, but when I push the music through an equaliser, I hear a crackling sound (only on hi-res, 24-bit/192 kHz). I will maybe test more on this and will update the review.
Finally, I would recommend it. These IEMs are worth the buck.

One of the best dac amp in budget category, it gives balance output that going well with my performer 8.

It's an interesting product. I like all the tip options in this pack. It's a good beginner pack to know how each tip material can affect the sound quality. All the tip material & quality are good. The silicone tips & foam tips in the pack are good, like those stock tips we get with IEM. But the surprising tips are the latex tip & the hybrid foam tip. Although the latex tip feels a little rubbery in feel & is a dust magnet, but it's very comfortable, provides a good seal and does enhance bass & treble response slightly. And for the hybrid tip, it's like best of both worlds. It gives the comfort of a silicone tip as well as provides the seal of a foam tip. I'm not a big fan of foam tip in general because of how they feel in ear & it's very difficult to put them in the ear, but these hybrid tips removed all those problems for me.

This is one of the best modular cables I have ever seen in this price range. Microphonic is there as the nylon type of material is used for wrapping the cable. But microphonic is very minimal compared to other similar cable I have used. But, once the music starts playing, the microphonic would be gone. connector quality is very premium, on both the 3.5 / 4.4 termination as well as at 2-pin connector end. I love how easy is to replace the 3.5 & 4.4 end. It's highly recommended if you are looking for any premium modular cable on budget. It's one of my favorite modular cables along with the Moondrop aria 2's stock modular cable.

Sounds exactly like the Salnotes Zero with a bit more bass. Has that same Harman curve with upper midrange bump and reduced lower mids making male vocals sound thin. Good resolution/detail and treble is perfectly done. Fit is good and I like that these are very light.

I have own onix aplha as a dac and this is definitely a upgrade in that regards

From Blon bl2 to BGVP DN2
The jump on dunu was really worth it
Almost every genre songs this IEM drive at another level of dept n separation
Only flaw i could pin point some jpop heavy electric or high pinch voice of singers was little intolerable but other than it skillet and every other genre it nail it..
Accesories are another level really feel like worth the price and best customer care...
Tried every format from flac mqa to dsd . movies or series or anime . this earphone r all in one.
Bass timing silent timing Treble timing is all so perfectly tune (tried on LGV50)

If you are looking for a pair of headphones that would be your end game on a budget, then look no further, Edition XS is the way to go.
I have been using these for about 2 years and finally I can say, these cans a robust, dynamic and neutral to slightly bright.
But it also packs a punchy bass and has a good soundstage.
All you need is a pair of Edition XS and further you can keep leveling up the sound quality by upgrading cables to balanced ones, getting good DAC/AMPS and also modding the cans with new filters and grill.

Pros:
1. Sound is excellent for the price. I would say moondrop chu level sound quality. It follows the harman target with a little but turned down treble. Many people find the harman target a bit harsh at the top end. But this solves the issue.
2. I never had connectivity issues. Pairing was easy. As soon as I bring out the earbuds from the case, the buds automatically connects to my android phone.
Cons
1. App could be better. Obviously the app and other functionality won't be at the level of other mainstream tws like bose, samsung etc.
2. The fit. As someone who mostly uses wired iems. The tws does not feel as comfortable as the iems. For my ears, it's only comfortable for an hour or so. After that, it gets really uncomfortable.

I have been through some online videos/reviews before this purchase. My shortlist were, Moondrop Chu II, KZ Castor Pro, Wan'er SG. Audio Store was kind enough to provide demo of these to compare. Also Mr. Pritam shared valuable inputs on differences between my selected comparisons.
Very happy with the Tangzu Wan'er SG's output, everytime I listen to some of my old fav bolly songs it generates smile. Guess using it day by day increasing some sort of details or maybe I am getting use to. Best for listening for longer duration without fatigue. Bassheads may find it irrelevant to their taste. Over-all best Balanced tune IEM I must say which has some spark and doesn't feel boaring.

In the realm of audiophile excellence, where sound transcends mere listening and becomes an immersive journey, the Roseselsa Distant Mountain headphones emerge as a beacon of luxury and precision. Marrying vintage aesthetics with cutting-edge technology, these headphones offer a sublime auditory experience that caters to the most discerning of listeners.
Design and Build Quality
The Distant Mountain captivates with its retro-inspired design, reminiscent of the golden age of personal audio. The headband, crafted from solid stainless steel and adorned with genuine lambskin, ensures both durability and unparalleled comfort. The coaxial CNC-machined body exudes a high-gloss finish, presenting an extraordinary high-end texture that is both versatile and fashionable. 
Sound Performance
At the heart of the Distant Mountain lies an innovative 40mm composite topological diaphragm. This redesigned dome and corrugated ring deliver crisp, transparent treble and profound, surging bass. Enhanced by neodymium super magnets and an acoustic structure dedicated to small-sized headsets, the Distant Mountain presents richer sound details and a more natural treble extension, immersing the listener in melodious music. 
Comfort and Usability
The sponge ear pads are designed with both softness and breathability in mind, ensuring prolonged listening sessions remain comfortable. The headband supports fine length adjustments, with clearly visible scales to alleviate any concerns about symmetry. The inclusion of a stranded-free 5N single crystal copper IEM cable, coupled with a detachable MMCX design, offers high playability and customization for the user. 
Conclusion
The Roseselsa Distant Mountain is a testament to superb build quality and exceptional sound performance. Its unique tuning direction, reminiscent of high-fidelity in-ear monitors, combined with its luxurious design, makes it a standout choice for audiophiles seeking both style and substance. While it may require amplification to truly shine and could benefit from thicker earpads for optimal comfort, its value proposition remains compelling. For those who appreciate a blend of retro aesthetics and modern audio excellence, the Distant Mountain is an unrivaled choice. 
In the grand symphony of high-fidelity audio equipment, the Roseselsa Distant Mountain plays its notes , offering a professional and luxurious listening experience that is both nostalgic and forward-thinking.

I was not expecting much but this IEM sounds really good. If feels like a much more expensive IEM. The convenience thanks to the USB-C connection is great. I am able to use it on my phone, ipad and laptop. Gonna get some and gift some friends. This is a great gifting IEM / starter IEM !!!
I love the compatibility and the bill quality of the AUDIOCULAR d07, it works well with my samsung m53, . I also liked that u provide a case along with it , 😉

Good Sound Quality. Bass Treble Mid Too God Under 2k Price, Lookwise Good & Ear Fit & Gaming Experience To Good. & clear Sound Sense.
Earphone Case Too Good 👍 I like it.
Fast Delivery in 2 day delivery In My Address.